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Finding the Fourth Proportional to 9,798.40, 14,697.60 and 6,680.80

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Solution

The fourth proportional to 9,798.40, 14,697.60 and 6,680.80 is: 10,021.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,798.40 : 14,697.60 = 6,680.80 : x
  2. Step 2: Convert to fraction form
    9,798.40/14,697.60 = 6,680.80/x
  3. Step 3: Cross multiply
    9,798.40x = 14,697.60 × 6,680.80
  4. Step 4: Simplify right side
    9,798.40x = 98,191,726.08
  5. Step 5: Solve for x
    x = 98,191,726.08/9,798.40
  6. Step 6: Final answer
    x = 10,021.20

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.